Steam trap



FIG. 1 is a perspective view of a steam trap in accordance with our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom view thereof.

The portions of the figures in coarse dot patterns and outlined in dashed lines illustrate portions that form no part of the claimed design. 

The ornamental design for a steam trap, as shown and described. 